How to ensure the configurations are perssisted

To perssist changes at the container after deleting or restarting you must define a volume:

touch ./database.sqlite

after touching:

services:
  ressonance:
    image: ressonancia/ressonance
    restart: always
    ports:
      - "80:80"
      - "8000:8000"
      - "8080:8080"
    volumes:
      - ./database.sqlite:/var/www/app/database/database.sqlite